1/3/5/7/9/12/36/42 pins micro needle cartridge for mym derma pen n2 m5 m7 anti acne stretch marks removal

1.stimulate collagen fiber growth, 2.improve micro-circulation , 3.enhance skin care product`s activity substances into deeper skin layers, 4.treatment for hair loss,thin hair 5.improve scars caused by acne/chicken pox/trauma 6.stretch mark removal and stretch mark treatment 7. be used not only for special medical care but also at home. and 36 needle: whitening; watering; spot removing; skin rejuvenation; shrink pores.1 pin: tattoo, eyeliner and eyebrow.3 pin,5 pin, 7 pin : tattoo and eyebrow.